From: "H. Peter Anvin" <hpa@linux.intel.com>
To: Fengguang Wu <fengguang.wu@intel.com>,
Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Borislav Petkov <borislav.petkov@amd.com>,
Yinghai Lu <yhlu.kernel@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [qemu64,+smep,+smap] WARNING: CPU: 1 PID: 0 at arch/x86/kernel/cpu/amd.c:220 init_amd()
Date: Thu, 06 Mar 2014 21:03:50 -0800 [thread overview]
Message-ID: <53195336.9080606@linux.intel.com> (raw)
In-Reply-To: <20140307015833.GA10048@localhost>
On 03/06/2014 05:58 PM, Fengguang Wu wrote:
> Hi all,
>
> I find the below WARNING shows up only in
>
> qemu-system-x86_64 -cpu qemu64,+smep,+smap
>
Yes, it is because Qemu doesn't show the AMD-specific SMP CPUID bit.
It's harmless in that sense.
Unfortunately these things are hard to fix in Qemu.
-hpa
next prev parent reply other threads:[~2014-03-07 5:04 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-07 1:58 [qemu64,+smep,+smap] WARNING: CPU: 1 PID: 0 at arch/x86/kernel/cpu/amd.c:220 init_amd() Fengguang Wu
2014-03-07 5:03 ` H. Peter Anvin [this message]
2014-03-07 5:50 ` Fengguang Wu
2014-03-07 18:56 ` H. Peter Anvin
2014-03-07 19:10 ` Dave Jones
2014-03-07 21:01 ` H. Peter Anvin
2014-03-07 21:38 ` Borislav Petkov
2014-03-07 22:06 ` Dave Jones
2014-03-07 22:11 ` H. Peter Anvin
2014-03-07 22:22 ` Dave Jones
2014-03-07 22:27 ` Fengguang Wu
2014-03-07 22:34 ` Borislav Petkov
2014-03-07 22:20 ` Borislav Petkov
2014-03-07 22:27 ` Dave Jones
2014-03-07 22:39 ` Borislav Petkov
2014-03-09 18:07 ` Paolo Bonzini
2014-03-09 18:50 ` Borislav Petkov
2014-03-10 0:01 ` H. Peter Anvin
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